NO831577L

NO831577L - REVERSE PLUG MECHANISM

Info

Publication number: NO831577L
Application number: NO831577A
Authority: NO
Inventors: Karl Oskar Sune Nilsson
Original assignee: Oeverums Bruk Ab
Priority date: 1982-05-05
Filing date: 1983-05-04
Publication date: 1983-11-07
Also published as: DK173583D0; FR2526262A1; SE430642B; GB8311189D0; GB2124462A; NL8301282A; SE8202815L; DE3312545A1; GB2124462B; DK173583A

Description

|F<j>religgende oppfinnelse vedrører en vendemekanisme for en såkalt vendeplog, som omfatter en ramme med høyre- respektive venstreleggende ploglegemer, hvilke etter dreining av rammen rundt en aksel som forløper hovedsakelig i fremføringsret-ningen kan bringes til avvekslende å inngripe med bakken, idet dreiningsbevegelsen mellom de to arbeidsstillinger til-v<e>iebringes av to enkeltvirkende sylindre. The present invention relates to a reversing mechanism for a so-called reversing plough, which comprises a frame with right- or left-facing plow bodies, which, after turning the frame around an axle which runs mainly in the forward direction, can be brought to alternately engage with the ground, as the turning movement between the two working positions is brought about by two single-acting cylinders.

Veindemekanismer av forskjellige slag er tidligere kjent.Turning mechanisms of various kinds are previously known.

OJjte anvendes en enkelt dobbeltvirkende hydraulisk sylinder, scj>m via en manøverventil for hydraulolje er således koblet at inntrekking av stempelet tilveiebringer svingning av plog-I o ' o ens ramme ca. 90 , hvoretter ytterligere svingning fra til 180° tilveiebringes ved at stempelet drives utad. An-ordninger, av denne type fungerer vanligvis tilfredsstillende, mén undertiden oppstår det feilfunksjoner i ventilmekanisme og sylinder på grunn av deres kompliserte oppbygning. OJjte is used a single double-acting hydraulic cylinder, scj>m via a maneuvering valve for hydraulic oil is connected in such a way that retraction of the piston provides oscillation of the plough-I o ' o one's frame approx. 90 , after which further oscillation from to 180° is provided by the piston being driven outwards. An arrangements of this type usually work satisfactorily, but sometimes malfunctions occur in the valve mechanism and cylinder due to their complicated structure.

Det er også kjent å anvende to enkeltvirkende sylindre for vending av plogrammen på delbårne ploger, se f.eks. svemik patentsøknad nr. 7813052-3, idet sylindrene er plassert på den vogn i hvilken plogrammen er opphengt. Sylindrenes stempel står via et kulissearrangement i forbindelse med rammen for å muliggjøre den nødvendige 180°-dreining. I dette kjente tilfelle må vognen være forsynt med to hjul for å ta opp de krefter som oppstår, dels ved dreiningen, dels ved stabiliseringen av plogen for øvrig. Da kulissearrange-mentet er plassert langt bak på plogen, er risikoen for sirtutsing med derav følgende slitasje stor, og dessuten er vogn og kulissearrangement spesielt kostbare å ■fremstille. It is also known to use two single-acting cylinders for turning the plow frame on semi-mounted ploughs, see e.g. svemik patent application no. 7813052-3, as the cylinders are placed on the carriage in which the plow frame is suspended. The piston of the cylinders is connected to the frame via a slide arrangement to enable the necessary 180° rotation. In this known case, the cart must be equipped with two wheels to take up the forces that arise, partly during the turning, partly during the stabilization of the plow in general. As the slide arrangement is located far back on the plough, the risk of skidding with consequent wear is great, and furthermore the carriage and slide arrangement are particularly expensive to manufacture.

Anordningen ifølge foreliggende oppfinnelse er bygget oppThe device according to the present invention is built up

a<y>enkle og robuste komponenter, hvilket gjør at mekanisnen blir slitesterk og solid. Dette oppnås ifølge oppfinnelsen slik denne'defineres i de etterfølgende patentkrav. a<y>simple and robust components, which makes the mechanism durable and solid. This is achieved according to the invention as defined in the subsequent patent claims.

En utførelsesform av oppfinnelsen vil nå bli beskrevet under .henvisning til vedføyede tegninger, . hvor An embodiment of the invention will now be described with reference to the attached drawings. where

Figi 1 i sideriss viser en vendeplog ifølge oppfinnelsen med programmen i transportstilling, og Fig. 1 in side view shows a reversible plow according to the invention with the program in transport position, and

F:.g. 2a - 2e viser dreiningsmekanismen ved forskjellige til-stander under.dreiningsbevegelsen. F:.g. 2a - 2e show the turning mechanism in different states during the turning movement.

Som det fremgår av fig. 1 består vendeplogen av et vendehode 10 beregnet på stivt å innfestes radielt i trekk-kjøretøyet. As can be seen from fig. 1, the reversible plow consists of a reversible head 10 designed to be rigidly fixed radially in the towing vehicle.

Vendehodet fortsetter bakover som et stabiliseringsrør 11, som går over i et feste 12 for et støtte- og trahsporthji.il 13. Stabiliseringsrøret bærer en fremre lagerhylse 14 oe The turning head continues backwards as a stabilization tube 11, which transitions into a mount 12 for a support and trahsporthji.il 13. The stabilization tube carries a front bearing sleeve 14 oe

en bakre lagerhylse 15, som er lagret for dreining på røret. Den fremre lagerhylse 14 understøtter en glideskinne 16, som er innstillbar ved hjelp av en sylinder 17, idet glide-skinnen er fast forbundet med plogens ramme 18. Dette arran-gement tillater innstilling av plogens arbeidsbredde. Rcun-m<pn er dessuten via en tapp 19 dreibart forbundet med den bakre lagerhylse 15 og opptar et antall T-formede plogarmer 20, som hver på konvensjonell måte er forsynt med et ikke vist høyre- respektive venstreleggende ploglegeme. a rear bearing sleeve 15, which is stored for turning on the tube. The front bearing sleeve 14 supports a sliding rail 16, which is adjustable by means of a cylinder 17, the sliding rail being firmly connected to the plow's frame 18. This arrangement allows the plow's working width to be adjusted. Rcun-m<pn is also via a pin 19 rotatably connected to the rear bearing sleeve 15 and accommodates a number of T-shaped plow arms 20, each of which is provided in a conventional manner with a not shown right- or left-laying plow body.

Plogarmene fortrinnsvis på kjent måte opphengt for å løses u-; ved påkjøring av hindringer i bakken. Den fremre lagerhylse 14 er forsynt med to par festeører 21a, 21b respektive 22a, 2 2b, hvilke mellom seg dreibart opptar hver sin leddarm 23 respektive 24. Hver leddarm 23, 24 er også dreibart forbundet med en stempelstang 25 respektive 26, hver tilhør-ende en enkeltvirkende sylinder 27 respektive 28. Disse sylindre er dreibart innfestet i den øvre del av en konsoll 11. I The plow arms are preferably suspended in a known manner in order to be released un-; when hitting obstacles on the ground. The front bearing sleeve 14 is provided with two pairs of mounting lugs 21a, 21b and 22a, 22b respectively, which between them rotatably accommodate each joint arm 23 and 24, respectively. Each joint arm 23, 24 is also rotatably connected to a piston rod 25 and 26, respectively, each belonging to end a single-acting cylinder 27 and 28 respectively. These cylinders are rotatably fixed in the upper part of a console 11. In

29 tilhørende stabiliseringsrøret 11. Den fremre lagerhylse 29 belonging to the stabilization tube 11. The front bearing sleeve

1sy4 ! lhinadr er to er ansfolarg syn3t 0 mreed speekn tvivene ti3l 1 f3o2 r sodm e tso trulpededr artmielrfø. rsHeivler ay olje ved sylinderens evakuering, men slipper igjennom full strømning ved dens fylling. Dé to sylindre 27 og 28 er koblet til trekk-kjøretøyets dobbeltvirkende hydrauluttak. 1sy4 ! lhinadr is two is ansfolarg syn3t 0 mreed speekn tvivene ti3l 1 f3o2 r sodm e tso trulpededr artmielrfø. rsHeivler ay oil when the cylinder is evacuated, but lets through full flow when it is filling. The two cylinders 27 and 28 are connected to the towing vehicle's double-acting hydraulic outlet.

Anordningen fungerer på følgende måte, og hverved henvises . hoI vedsakelig til fig. 2a - 2e. på fig. 2a viste stilling inntar plogen én av sine arbeidsstillinger, idet de venstreleggende ploglegemer er d| inngrep med bakken. Begrensning av lagerhylsens bevegelse i forhold til stabiliseringsrøret skjer ved en ikke vist stillbar stopper. Plogens ramme ligger mot stopperen ved hjelp ay sin egen tyngde. Når dreiningsbevegelsen skal påbegynnes, mates hydraulolje inn i sylinderen 28, hvorved stempelstangen 26 trykkes ut. Leddarmen 24 ligger an mot anslaget 31 og presser dette nedad på fig. 2a, hvilket resulterer i at den fremre lagerhylse 14 dreies rundt stabiliseringsrøret 11 samtidig som anslaget 30 nærmer seg leddarmen 23. Under denne del av bevegelsen påvirkes ikke stempelstangen 25 aksial retning og befinner seg hele tiden i sin helt ut-sjcjøvne stilling. Sylinderen 27 svinger derved en mindre; vinkel mot venstre på figuren. The device works in the following way, and reference is made to . referring to fig. 2a - 2e. on fig. In the position shown in 2a, the plow takes one of its working positions, the left-hand plow bodies being d| engagement with the ground. Limitation of the bearing sleeve's movement in relation to the stabilization tube takes place by means of an adjustable stop, not shown. The frame of the plow rests against the stopper with the help of its own weight. When the turning movement is to begin, hydraulic oil is fed into the cylinder 28, whereby the piston rod 26 is pressed out. The joint arm 24 rests against the stop 31 and presses this downwards in fig. 2a, which results in the front bearing sleeve 14 being rotated around the stabilization tube 11 at the same time as the stop 30 approaches the joint arm 23. During this part of the movement, the piston rod 25 is not affected in the axial direction and is constantly in its fully extended position. The cylinder 27 thereby swings a little; angle to the left of the figure.

Når rammen har svingt til den på.fig. 2b viste stilling, går anslaget 30 i inngrep med leddarmen 23 og presser stempelstangen 25 innad i sylinderen 27, idet strupingen i ventil- When the frame has swung to the on.fig. position shown in 2b, the stop 30 engages with the joint arm 23 and presses the piston rod 25 inside the cylinder 27, as the throttle in the valve

I oi en 32 sørger for at dreiningsbevegelsen dempes. For a sz.kre at dreiningsbevegelsen fullføres over midtstillingen, pres-ses leddarmen 24 av sylinderen 28 mot anslaget 31 under ytterligere en mindre del av dreiningsbevegelsen inntil stempelstangen 26 har nådd sin bunnstilling i sylinderen 28. Rammen har da kommet forbi nevnte midtstilling ifølge fig. I oi en 32 ensures that the turning movement is dampened. To ensure that the turning movement is completed above the middle position, the joint arm 24 of the cylinder 28 is pressed against the stop 31 during a further smaller part of the turning movement until the piston rod 26 has reached its bottom position in the cylinder 28. The frame has then passed the said middle position according to fig.

2c til. den posisjon som er vist på fig. 2d.2c more. the position shown in fig. 2d.

I denne stilling slipper anslaget 31 kontakten med leddarimen24, og tyngden av rammen med ploglegemene opptas ved samyirks av anslaget 30, leddarmen 23 og stempelstangen 25 av sylinderen 27, idet dreiningsbevegelsen bremses ved hjelp av ven-tilen 32. In this position, the stop 31 releases the contact with the link arm 24, and the weight of the frame with the plow bodies is taken up by the joint action of the stop 30, the link arm 23 and the piston rod 25 of the cylinder 27, as the turning movement is slowed by means of the valve 32.

Når de høyreleggende ploglegemer etter dreiningsbevegelse;ns fpllførelse har gått i inngrep med bakken, befinner sylinderh enI s 27 stempelstang. 25 seg i sin inntrykte stilling og drjei<->ningsbevegelsen kan deretter gjentas i motsatt retning. When the right-hand plow bodies have engaged with the ground after the turning movement has been completed, the cylinder is located on the piston rod 27. 25 itself in its impressed position and the turning movement can then be repeated in the opposite direction.

Dei t skal også bemerke.si at. dreijiingsbeyegelsen jcan avbrytes Dei t should also note. say that. the turning motion can be interrupted

I hvor som helst under bevegelsen med trekk-k jøretøyets hycjlraui-ventil i nøytralstilling. I den på fig. 2c viste stilling befinner plogrammen seg i transportstilling, idet de høyjre-og venstreleggende ploglegemer. er i likevekt med hverandre. E-l/entuelle sidekrefter kan i denne stilling ikke påvirke plogrammen, da de to sylindre 27, 28 låser rammen i transport-stillingen. In any place during the movement with the towing vehicle's hycjlraui valve in the neutral position. In the one in fig. In the position shown in 2c, the plow frame is in the transport position, with the right-hand and left-hand plow bodies. are in equilibrium with each other. Any lateral forces in this position cannot affect the plow frame, as the two cylinders 27, 28 lock the frame in the transport position.

Claims

1, Reversing mechanism for a so-called reversible plough, which comprises a frame (18) with right- or left-facing plow bodies, which, after turning the frame around an axle that runs mainly in the forward direction, can be brought to alternately engage with the ground, as the turning movement between the two working positions is provided of two single-acting cylinders (27,28), characterized in that each cylinder is rotatably connected to an articulated arm (22, 24) which in turn is rotatably connected to the frame (18) and is brought into engagement with each stop (30, 31) etc. on the frame.

2„ Mechanism according to claim 1, characterized in that during the entire turning movement, at least one of the joint arms is in contact with a corresponding abutment.

3. Mechanism according to claim 1 or 2, characterized in that both joint arms are in contact with the stops when the frame is in a central middle position of the turning movement.

4. Mechanism according to one of the preceding claims, characterized in that the articulated arms are attached to the plow frame on both sides of the turning shaft.

5. Mechanism according to one of the preceding claims, characterized in that each cylinder is connected to a valve (32) which throttles the flow when the cylinder is activated but allows full flow through when the cylinder is filled.

6. Mechanism according to one of the preceding claims, characterized in that the axle around which the frame's drive unit takes place is constituted by a radial with towing vehicle <y> a rigidly connected stabilization tube (11), which in its rear part carries a support wheel (13) .